NGC2403, ok so it should be covered in measles of red HII regions (Google NGC2403 to see what it should look like) but I felt I was lucky to get anything with the strong moonlight.

Just under 4 hours and 30 minutes of exposures
Skywatcher 80ED
Pentax K-70
Pentax 1.4x Teleconverter.
SVBony CLS filter.